Coded data generation or conversion inventions 03/06

20060066460 - Arithmetic unit: The present invention provides an arithmetic unit performing a saturation process that can reduce a delay time relating to an arithmetic process and a saturation process, thereby being capable of increasing a processing speed. An arithmetic unit according to the present invention includes an arithmetic processing section that performs an...

20060066461 - Determination of key bit positions in gray codes: A key bit position of a first Gray code is determined based on the bit values of the first Gray code. The first Gray code and a second Gray code that differs from the first Gray code only in the key bit position correspond to two associated numbers that differ...

20060066462 - Single to dual non-overlapping converter: A converter includes an input circuit to receive a single-ended input signal to generate a number of control signals. The control signals have a delay different from one another relative to the single-ended input signal. The converter also includes a first output circuit and a second output circuit. The first...

20060066463 - High resolution and low consumption digital-to-analog converter: A digital-to-analog converter includes a first section (MSB) that converts the more significant bits of a digital code into a first voltage (Vin) of a multiplicity of discrete voltages that are integral multiples of a predetermined first voltage step (ΔV1). A second section (LSB) of the converter converts the less...

20060066464 - Analog-to-digital converter for programmable logic: Digital-to-analog and analog-to-digital conversion are implemented in or using programmable logic. The DAC and ADC circuits may be hardwired in a programmable logic integrated circuit or may be implemented using an intellectual property (IP) core. The IP core would be a series of bits to configure the logic cells and...

20060066465 - Circuit configuration for analog/digital conversion: A circuit configuration for converting analog signals to digital signals, having a multiplexer which has a plurality of analog signal inputs, an address input that is several bits wide and an output, and which is configured to connect one of the analog signal inputs to the output when an address...

20060066466 - Hierarchical parallel pipelined operation of analog and digital circuits: A hierarchical parallel pipelined circuit includes a first stage with a plurality of sampling circuits and a plurality of corresponding analog or digital circuits that receive an output from the plurality of sampling circuits. A second stage includes a second plurality of sampling circuits and a plurality of corresponding analog...

20060055566 - Keypad and handheld electronic device: An improved keypad having a plurality of keys can have linguistic elements assigned to the keys in any of a variety of arrangements depending upon various considerations....

20060055567 - Method and device for key input in mobile terminal: A method for inputting characters in a mobile terminal is provided. The method involves the steps of detecting any key pressing event on a key input unit, storing the detected key pressing event and performing an operation corresponding to the key pressing event, determining whether a predetermined multi-click key is...

20060055569 - Fast, practically optimal entropy coding: An enumerator employs “indexing volumes” as the add-on values used to compute indexes for n-item ordered sets such as symbol sequences. Each indexing volume is associated with a different class into which the allowed ordered sets are partitioned. The indexing volumes all equal or exceed the number of ordered sets...

20060055568 - High efficiency dc link inductor: An improved inductor for a DC link that has an auxiliary winding for inducing an opposing magnetic field in a magnetically permeable core with an auxiliary DC current that opposes a magnetic field that a primary winding for the inductor induces along a magnetic path in the core with a...

20060055570 - Bidirectional level shifter: A bi-directional level shifter for shifting a digital signal from a low power supply voltage level to a high power supply voltage level and vice versa includes first and second I/O terminals, a first circuit operating at a low power supply voltage, and a second circuit operating at a high...

20060055571 - Coding apparatus and imaging apparatus: The present invention aims to provide a variable-length coding apparatus that achieves a short processing cycle without causing an increase in circuit scale. Such a variable-length coding apparatus judges whether a VLC table has a variable-length code (VLC) corresponding to a combination (Last, Run, Level), by using an LMAX and...

20060055572 - Test circuit for digital to analog converter in liquid crystal display driver: A test device for testing a digital to analog converter includes a gamma reference unit for generating a plurality of analog signals different from each other; a temporary storing unit for generating a plurality of digital signals different from each other; a decoder for selecting one of the plurality of...

20060055573 - Method and apparatus for addressing receive band noise problems associated with the use of a digital power amplifier: An apparatus and method for biasing at least one transistor of a Radio Frequency Digital to Analog Converter (RFDAC). The apparatus including a direct base current injection circuit for injecting a DC current waveform directly into a base terminal of the transistor....

20060055578 - A/d converter and a/d converting system: In a flash A/D converter including a plurality of differential amplifier circuits and a plurality of voltage comparator circuits, a regulator circuit is provided. The regulator circuit automatically regulates a bias voltage of each of the plurality of differential amplifier circuits in a differential amplifier circuit array to make an...

20060055576 - Analog to digital conversion with offset cancellation: An analog to digital conversion circuit includes a voltage-to-charge converter coupled to a charge integrator and a comparator. The voltage-to-charge converter is coupled to, and converts the voltage of, an analog signal or one of a set of reference voltages, into an equivalent charge. The charge integrator then adds or...

20060055575 - Analog-to-digital conversion arrangement, a method for analog-to-digital conversion and a signal processing system, in which the conversion arrangement is applied: An analog-to-digital conversion arrangement for converting an analog input signal into a digital output signal with a most significant part and a least significant part comprises sample means for sampling the analog input signal, a plurality of coarse resolution analog-to-digital converters for converting the sampled analog input signal into a...

20060055574 - Digital controller for high-frequency switching power supplies: A voltage controller (150), the controller comprising: a voltage comparator (700) operative to provide a digital error signal (152); a compensator (300) operative to determine a digital control signal (154) based on said provided error signal; and a modulator (400) operative to provide a power control signal (156) based on...

20060055579 - Digital detection of blockers for wireless receiver: A receiver 100 is provided. The receiver 100 comprises an in-phase analog-to-digital converter 112 operable to detect a saturation condition of the in-phase analog-to-digital converter 112 and to adjust the amplitude of a in-phase signal processed by the in-phase analog-to-digital converter 112 to remove the in-phase analog-to-digital converter 112 from...

20060055577 - Minimized differential sar-type column-wide adc for cmos image sensors: An analog-to-digital converter comprising a minimal amount of circuitry for conversion of an input analog signal to a series of digital bits. A differential comparator is provided for generating digital values to which the digital bits correspond. A pair of digital-to-analog converters are provided for generating, via successive approximation, a...

20060055580 - Controlled power source, in particular for a digital analogue converter in continuous time sigma delta modulators: The present invention relates to a controlled current source having a control input, in particular for digital/analogue converters in continuous-time sigma/delta modulators, having a current source (4) with a control input which generates an output current dependent on a control voltage applied to the control input, and having a controller...

20060055581 - Five-level feed-back digital-to-analog converter for a switched capacitor sigma-delta analog-to-digital converter: A five-level feed-back digital-to-analog converter (DAC) in a switched capacitor sigma-delta analog-to-digital converter has an improved switching sequence that boosts from two to five the number of quantization levels of the feed-back DAC. Switching sequences are used to obtain five equally distributed charge levels C*VREF, C*VREF/2, 0, −C*VREF/2 and −C*VREF....

20060055582 - Remote control: The invention relates to a remote it comprises an operating element (1) which is provided to transmit tactile information via the operating element (1), which information is adjustable by a user (20) and/or controllable by a control unit (4)....

20060049964 - Dual optical angular encoder: To monitor the reliability of the information provided by a dual optical angular encoder, comprising two pairs of cells for detecting marks borne by a disc, at a given instant, the sequences of at least four successive states taken by the two groups of cells before this instant are compared...

20060049965 - Method and apparatus for keyboard control with programmable debounce and jog: A method for providing debounce and jog control for a keyboard includes loading a first electronic storage register with a value indicative of a debounce period for the keyboard and loading a second electronic storage register with a value indicative of a jog period for the keyboard. The keyboard is...

20060049968 - Audio apparatus for processing voice and audio signals: An audio apparatus for performing digital data processing on voice and audio signals through interrelated data sampling and processing. A predetermined mixing processing in the audio apparatus is performed by a first digital processing circuit on both (a) digital received-voice signals converted into the signals sampling processed at a frequency...

20060049966 - Audio data code conversion transmission method and code conversion reception method, device, system, and program: A system and a method of suppressing outstanding degradation of decoded audio quality due to a transmission error of audio coded data are provided without feedback information from a receiver, thereby reducing the increase of the number of necessary transmission bands and the arithmetic complexity on the receiving side. A...

20060049967 - Code driver for a memory controller: A code driver is described having a codeword source, which has n>1 source terminals and is designed to output at these terminals a sequence of n-digit codewords, each in the form of n parallel code characters, and having n parallel transmission paths between the n source terminals and n transmit...

20060049969 - Method and system for time sharing n consecutive half-band decimating-by-2-filters using a single filter: A method and system for time sharing N consecutive half-band decimating-by-2-filters using a single filter. Aspects of the method may comprise selecting a latched input signal and filtering, via a single decimating filter, the selected latched input signal to generate a first output signal. The method may also comprise latching...

20060049970 - Sigma-delta modulation: Sigma-delta modulation is provided, wherein an input signal is feeded to at least two parallel filters, a first one of the filters preferably being a lower order filter and a second one of the filters preferably being a higher order filter, wherein output of the filters are weighted and wherein...

20060049971 - Sub-ranging digital to analog converter for radiofrequency amplification: An apparatus and method for amplifying a radiofrequency signal using a main Digital to Analog Converter (RFDAC) and a subordinate Digital to Analog Converter (Sub-DAC). The main RFDAC provides a first portion of a N-bit digital output, which specifies the amplification level of the radiofrequency signal, and the sub-DAC provides...

20060049972 - Asynchronous serial analog-to-digital converter methodology having dynamic adjustment of the bandwidth: A new methodology is disclosed to convert analog electric signals into digital data. The method provides a serial scheme without pre-definition of the number of bits (dynamic range). It allows digital processing of the input signal without sampling and holding of the input signal. Processing of the input signal is...

20060049973 - Pipelined a/d converter and method for correcting output of the same: Analog inputs to a controllable stage can be switched by an input selecting section, while digital inputs to a D/A converter in the controllable stage can also be switched. An error calculation section calculates an error in the output of the pipelined A/D converter caused by an error in the...

20060044162 - Fibre optic communications: An encoder and an encoding method are suitable for use in an optical communication system. A concatenated coding scheme is used, in which the source data are encoded by means of an outer encoder to produce outer encoded data, and the outer encoded data are encoded by means of an...

20060044163 - Image reproduction apparatus, control method thereof, program and storage medium: An object of this invention is to suppress discontinuity of a moving image as much as possible. In order to achieve this object, an image reproduction apparatus includes a buffer which temporarily stores an encoded image data stream, a buffer size setting circuit which sets the storage size of the...

20060044164 - Reproduction system, reproduction equipment and reproduction method: A reproduction system is capable of networking a plurality of reproduction equipments via a communications network. Each equipment is capable of reproducing a data signal and comprises a manipulation unit for receiving an input operation, a reproduction unit for reproducing a program by using a recording medium, an operation unit...

20060044165 - Variable length decoding device: A variable length decoding device for decoding variable length coding data and run length coding data according to the present invention comprises a variable length decoding unit 3 for serially decoding the variable length coding data and the run length coding data inputted from outside in a state in which...

20060044167 - Analog signal interpolation: A linear interpolator is provided that includes differential pairs of transistors biased such that a first input voltage may be multiplied by a factor r wherein 0≦r≦1 and such that a second input voltage may be multiplied by the complement factor (1−r). By combining the multiplied input voltages, a linear...

20060044166 - Noise shaper circuit and method for reducing switching noise: Noise that is normally generated during the switching of a noise shaper may be reduced by switching the noise shaper to an inactive or off state after the occurrence of one or more predetermined criteria, for example the detection of a predetermined number of data values below a threshold value...

20060044168 - Pwm modulation circuit and class d amplifier using such pwm modulation circuit: The PWM modulation circuit according to the invention is connected to an input terminal for an analog baseband signal and a staircase generating circuit generating a staircase wave, and carries out PWM modulation to a staircase wave input from the staircase generating circuit based on an analog baseband signal input...

20060044169 - Current driven d/a converter and its bias circuit: A current driven D/A converter sets an OFF control voltage (BIAS3) for turning off NMOS transistors M12P, M12N, M22P, M22N, M32P and M32N at a voltage close to an ON control voltage (BIAS2). This makes it possible to reduce the swing of the control voltage (ON control voltage—OFF control voltage)...

20060044171 - A/d converter and duty control method of sampling clock: An A/D converter comprises a sample and hold circuit receiving a signal and operating based on a sampling clock, an A/D converting circuit converting an output signal of the sample and hold circuit to a digital signal, an A/D output determination circuit outputting a duty control signal based on the...

20060044170 - Minimized sar-type column-wide adc for image sensors: An improved analog-to-digital converter wherein a minimal amount of circuitry is provided for conversion of an analog signal to a series of digital bits. A comparator is provided for generating digital values to which the digital bits correspond. A digital-to-analog converter is provided for generating, via successive approximation, a feedback...

20060044173 - Pipelined a/d converter and method for correcting error in output of the same: Two capacitors in a variable stage are controlled from outside to function as a feedback capacitor and a sampling capacitor, respectively. With a test signal being supplied to the variable stage from an input selecting section, a stage evaluation section estimates an error in the output of the variable stage...

20060044172 - Semiconductor integrated circuit device: A semiconductor integrated circuit device provided with a pipeline A-D conversion circuit in which the enhancement of accuracy and the reduction of power consumption are accomplished is provided. The pipeline A-D conversion circuit is connected in series with an input terminal to which an analog signal to be converted is...

20060044174 - Hysteretic dc/dc converter: A hysteretic DC/DC converter is proposed that operates at a high switching frequency without producing undesired pulse bursts at the output. The converter has a converter power stage with a supply voltage input, a controlled voltage output and an enable input. A comparator has a reference voltage input, a feedback...

20060044175 - Remote control system and information process system: A remote control system includes a display device providing a graphic user interface and a touch screen for inputting a control command. A macro editing is realized through the graphic user interface and the touch screen and steps provided for the macro are arranged in rows and columns....